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f715c53bca
This makes it easier to import cleanly downstream, and makes it a lot easier to reason about. Bug: webrtc:6828 Change-Id: I953e129de73053f8619333fe7e318b36e3a1fffa Reviewed-on: https://webrtc-review.googlesource.com/22722 Commit-Queue: Patrik Höglund <phoglund@webrtc.org> Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20727}
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/audio_processing/transient/wpd_node.h"
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#include <math.h>
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#include <string.h>
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#include "common_audio/fir_filter.h"
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#include "common_audio/fir_filter_factory.h"
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#include "modules/audio_processing/transient/dyadic_decimator.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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WPDNode::WPDNode(size_t length,
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const float* coefficients,
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size_t coefficients_length)
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: // The data buffer has parent data length to be able to contain and filter
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// it.
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data_(new float[2 * length + 1]),
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length_(length),
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filter_(CreateFirFilter(coefficients,
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coefficients_length,
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2 * length + 1)) {
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RTC_DCHECK_GT(length, 0);
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RTC_DCHECK(coefficients);
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RTC_DCHECK_GT(coefficients_length, 0);
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memset(data_.get(), 0.f, (2 * length + 1) * sizeof(data_[0]));
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}
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WPDNode::~WPDNode() {}
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int WPDNode::Update(const float* parent_data, size_t parent_data_length) {
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if (!parent_data || (parent_data_length / 2) != length_) {
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return -1;
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}
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// Filter data.
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filter_->Filter(parent_data, parent_data_length, data_.get());
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// Decimate data.
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const bool kOddSequence = true;
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size_t output_samples = DyadicDecimate(
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data_.get(), parent_data_length, kOddSequence, data_.get(), length_);
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if (output_samples != length_) {
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return -1;
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}
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// Get abs to all values.
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for (size_t i = 0; i < length_; ++i) {
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data_[i] = fabs(data_[i]);
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}
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return 0;
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}
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int WPDNode::set_data(const float* new_data, size_t length) {
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if (!new_data || length != length_) {
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return -1;
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}
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memcpy(data_.get(), new_data, length * sizeof(data_[0]));
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return 0;
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}
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} // namespace webrtc
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